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My computer was recently infected with a rootkit virus from what I could tell. When first discovered, my virus check took 38 hours and found 6898 virus's, I moved these to the chest and predictebly it killed windows, I was unable to boot into it or safe mode.

I used my installation of Ubuntu to back up important files and to try and troubleshoot the problem.

So to solve the problem, I first recovered windows using my recovery discs then I used an image backup to recover my programs (Note: The image was created a year prior to the virus therefore definitely clean). So I am now able to access Windows.

Problem:

My computer is running incredibly slow. It is unusable! I cannot open any program without it crashing and then I have to wait for it to reciver itself. I have run a further virus scan which brought up nothing. The Ram is registering at 2.78GB (Usable) which is about right considering I only have 3GB.

I have run an error check on my hard drive and there were no errors. I have started to (albeit slowly) uninstall unwanted programs and clear system files. I am trying to eliminate everything but it really is annoying me.

I am open to suggestion on what the problem may be.

Additional Info:

I opened up the Event Viewer and in the last 24 hours there have been over 500 errors. Also I use Avast Free to protect my computer

Hope some one can suggest some tests or solutions to my problem Cheers.

try these steps
first make repair to windows by
go to
start
run type cmd
press enter
a dos screen will appear
type
sfc /scannow
wait until repairing is finish
and these word appear
windows flie protection didnt find ................
which meaning there is no missing file
then use one of these registery program
like
ashampoo registery optimizer
tune up utilities
then use
ccleaner to clean the computer from temp files

We see a lot of problems with Win7 being ruined by Registry Cleaners and Optimizing Suites. Most Registry Cleaners are sales operations with no genius behind them. It requires the highest level of genius to avoid damaging the registry. Only CCleaner has come through as fully trustworthy over more than 15 years. No claims of it damaging the registry are able to be confirmed, while we confirm others regularly.

However your idea to run SFC /scannow is good, once OP has fully disinfected his system.

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